Coating tool



FIG. 1 is a front elevation view of a coating tool showing my new design, the rear elevation view being identical thereof.

FIG. 2 is a top plan view thereof.

FIG. 3 is a right side elevation view, the left side elevation view being identical thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken line shown in FIG. 4 represents the bounds of the claimed design and forms no part thereof. 

The ornamental design for a coating tool, as shown and described. 